Wrench



H. E. LIGHTNER.

IWRENCH. APPLICATION FILED SEPT. 2l, 1921.

Patented June 2i), 1922.

HARVEY E. LIGHTNER, F TECUMSEH, OKLAHMA.

WRENCH.

implication filed September 2l, 1921.

To r/ZZ 107mm 'it may concern.'

lle it known that l, Hnnvnv E. Lrorirrien, a citizen ot the United States, residing at Tecumseh. in the county oi Pott and State oit Oklahoma, have invented certain new and useful improvements in a lllrench, of which the following is a specication.

T his invention relates to wrenches and more particularly to an improved type ci pipe wrench.

The primary object of the invention is to provide a wrench having gripping aws connected with an operating handle in a manner that will cause the teeth of the jaws to firmly grip 'the pipe or other rounded member with which the wrench is connected.

The invention has for one of its objects to provide a wrench of this character which will be positive and eilective in its operation so that slipping ot the jaws on the pipe or other article will not occur.

Other objects of the invent-ion will appear upon consideration oi the following detail description and accompanying drawings, wherein z- Figure 1 is a perspective view or" the wrench constructed in accordance with my invention,

Figure 2 is a transverse section taken approxiinately on the line 2-2 et Fig. 1.

Referring to the drawing by numerals, the wrench handle or bar 1 is provided at one end with a bifurcation 2 forming connecting lingers 3, the terminals ot which are provided with openings tor receiving a. bolt 1. Suspended from the bolt 4l is the primary jaw 5 which consists of two parallel arms 6 having their upper ends provided with openings to receive the bolt el, the gripping portion i being provided with transverse teeth whereby an effective grip may be obtained when the jaw is in use. lt will be noted that the portions 6 are laterally spaced apart to provide the space S and these suspension arms or portions 6 are provided with openings to receive a pivot bolt 9 upon which the secondary gripping j aw 10 is pivu ot-ally mounted. lThis jaw consists of the gripping portion 11 and the intermediate enlarged portion 12 through which an opening is formed to receive the pivot bolt 9n it rearwardly ext-ending arm or lever 13 is provided with a longitudinal slot 14 for receiving the bight 15 of a link 16 which is pivotally mounted as indicated at 17 on the Specification of Letters Patent.

Patented June 2t), 19220 semi no. maree.

arm 1 of the wrench. ylllhe link 16 is adapted to slide through the slot 14 in the lever 13 when the parts are swung on their various pivotal points.

ln operation, the pipe or other member will be placed between the gripping faces oit the aws whereupon the handle bar 1 will be drawn in a direction to cause the link 16 to exert a pull on the lever 13 thus swinging the lever on the pivot 9 to cause the jaw 11 to move toward the primary aw 'i' tor eilecting a hrm grip on the object with which the wrench is engaged.

Minor changes may be made in the details oit construction without departing from the spirit oft the invention and the scope ot the claims hereunto appended.

What is claimed is 1. A wrench of the character described comprising primary and secondary gripping jaws, a handle bar, one end of the handle bar being bifurcated to provide opposite ngers, a bolt supported by the fingers, the primary jaw being provided with suspension arms swung from the said bolt, a pivot member extending transversely across the space between the said suspension arms, the secondary jaw being pivotally mounted on the bolt between the suspension arms, a lever attached to the secondary aw, and a link carried by the handle har and slidably engaged with the said lever whereby swinging movement of the lever will occur when the handle bar is swung on the uppermost pivot bolt.

2. A wrench ot the character described comprising an elongated handle bar having one end bifurcated to provide opposite supporting lingers, a transverse supporting bolt carried by the terminals oit the lingers, a primary jaw, suspension arms laterally spaced apart and hung from the said supporting bolt, a secondary jaw provided at its intermediate portion with an opening, a pivot bolt carried by the suspension arms and extended through the opening in the secondary jaw, a lever attached rigidly to the said secondary jaw and provided with a longitudinal slot, and a link pivotally suspended from the handle bar of the wrench and engaged with the lever through the said slot, whereby swinging movement or" the lever will cause the link to move the said jaws toward each other.

In testimony whereof l aiiix my signature.

HARVEY E, LGHTNER, 

